docs: def build_sh_cmd(cmd, cwd=None):
      """Build a `sh.Command` from a string.
  
      :param cmd: String with the command to convert.
      :param cwd: Optional path to use as working directory.
      :return: `sh.Command`
      """
      args = cmd.split()
      return getattr(sh, args[0]).bake(_cwd=cwd, *args[1:])